10/10/12 6:55 PM EDT

When Gary Johnson's included he gets 3% and actually takes mostly from Obama, pulling his lead over Romney down to 48/47. That could be something worth keeping an eye on.

RNC chairman Reince Priebus recently dismissed the idea that Johnson would draw votes from Romney, calling him "almost a non-factor" in a CNN interview.

But libertarian politicians — generally associated with the conservative movement — have always championed a mix of policies attractive to both left-leaning and right-leaning voters.

Conor Friedersdorf recently endorsed Johnson over Obama on the basis of the president's civil liberties record — and encouraged liberals and progressives to do the same.

It's plausible that Johnson could lower support for Obama — especially out west. For example, Johnson — the only pro-pot candidate on the ballot — is running along side as a marijuana legalization initiative in libertarian-leaning Colorado — a state that is definitely in play.